Answer:
A
if you match the ordered pairs with the info on the table it tells you the answer
Make x the subject means you need to solve for x
y = ax^2 solve for x
divide both side by a
y/a = ax^2/a
simplify
y/a = x^2
so
x = square root (y/a)
Answer:
85
Step-by-step explanation:
so basically you see the 14 thats just one line so to get the whole area of that thing you gotta do 14x2 to get 28 and on the next you have 28 too so 28+28+29 :D hope this helps :))
It's quadratic function, so c(x) = ax^2 + bx + c. We know, that:
c(3) = 103 => 3^2 a + 3b +c = 103 =>
9a+3b+c=103 (1)
c(7) = 163 => 7^2 a + 7b + c = 163 =>
49a+7b+c=163 (2)
c(12)=328 => 12^2 a + 12b + c = 328 =>
144a+12b+c=328 (3)
From first equation you get c = 103 - 9a - 3b
From second equation you get c = 163 - 49a - 7b
That's mean
103 - 9a - 3b = 163 - 49a - 7b
40a+4b=60 |:4
10a+b=15 => b = 15 - 10a
Substitute now c = 103 - 9a - 3b to third equation. You get
144a+12b+103-9a-3b=328
135a+9b=225 |:9
15a+b=25
b=25-15a
If b=15-10a and b=25-15a that's mean
15-10a=25-15a
5a=10 |:5
a=2
b=25-15a=25 - 15*2=25-30 = -5
c= 103 - 9a - 3b = 103 - 9*2 - 3*(-5)=103-18+15=100
You get the function:

Answer: Total cost of producing 2 widgets is $98